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State Air Regulations Can Go Above and Beyond National Standards 

Legal Planet

States and local air quality regulators have the legal authority to set particulate matter (PM), ozone, and nitrogen oxides (NOx) emissions standards and adopt regulations for these pollutants when they are already in attainment of the national ambient air quality standards ( NAAQS ) set by the U.S.

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Climate Change Threatens Already Poor Air Quality in California’s Central Valley

Union of Concerned Scientists

California’s Central Valley consistently experiences the country’s worst air quality, and climate change is poised to make air quality even worse. In a region known for its exceptional agricultural productivity, climate change is quickly amplifying a dangerous type of climate risk in California’s Central Valley: air pollution.

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DC Circuit dismisses utility-backed challenge to EPA cross-state ozone rule

Environmental News Bits

A federal appeals court on Friday dismissed a lawsuit brought by a utility-supported organization that sought to overturn the Environmental Protection Agency’s revised 2021 Cross-State Air Pollution Update Rule for ozone.

Ozone 40
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Why the Bay Area’s Zero-Emission Appliance Rule is a Big Deal

Legal Planet

Several cities in California, including Los Angeles and in the Bay Area, have outlawed new gas hookups, but these are the first regulations that would effectively ban the sale of gas appliances. Additionally, NOx react with other chemicals in the air to create other harmful pollutants, like fine particulate matter and ozone.

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Improving EPA’s Latest Ozone Transport Rule

Acoel

The downwind air quality benefits are minimal. The proposed rule would provide de minimus air quality benefits in downwind areas with extremely high costs – estimated by EPA at $22 billion discounted 2016 dollars for the 2023-2042 period. enjoyed ozone reductions of 3 to 5 ppb or more. ppb by 2025. EPA estimated that: .

Ozone 40
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Changes to California’s Electric Truck Proposal Could Reap Huge Climate and Air Quality Gains

Union of Concerned Scientists

This new regulation would apply to delivery vans, big rigs, box trucks, and buses. This new regulation would apply to delivery vans, big rigs, box trucks, and buses. Regulate more tractor trucks, including the smaller fleets. and 33 percent of NOx emissions from all on-road transportation in the state.

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EPA Proposes Rejection of San Joaquin Valley Air District PM2.5 SIP Submittal

Legal Planet

discussing the ways in which local air districts can take action to end harmful air pollution from building appliances. In California, CARB and the state’s 35 local air districts share authority to adopt and enforce control strategies to achieve these standards. Download as PDF.